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Das A, Liu D, Wary RR, Vasenko AS, Prezhdo OV, Nair RG. Mn-Modified ZnO Nanoflakes for Optimal Photoelectrochemical Performance Under Visible Light: Experimental Design and Theoretical Rationalization. J Phys Chem Lett 2023; 14:9604-9611. [PMID: 37862673 PMCID: PMC10626631 DOI: 10.1021/acs.jpclett.3c02730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 10/12/2023] [Accepted: 10/18/2023] [Indexed: 10/22/2023]
Abstract
Doping of zinc oxide (ZnO) with manganese (Mn) tunes midbandgap states of ZnO to enhance its optical properties and makes it into an efficient photoactive material for photoelectrochemical water splitting, waste removal from water, and other applications. We demonstrate that ZnO modified with 1 at. % Mn exhibits the best performance, as rationalized by experimental, structural, and optical characterization and theoretical analysis. ZnO doped with the optimal Mn content possesses improved light absorption in the visible region and minimizes charge carrier recombination. The doping is substitutional and creates midgap states near the valence band. Mn atoms break localized charge traps at oxygen vacancy sites and eliminate photoluminescence peaks associated with oxygen vacancies. The optimal performance of Mn-modified ZnO is demonstrated with the photodegradation of Congo red and photoelectrochemical water splitting.
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Affiliation(s)
- Abinash Das
- HSE
University, 101000 Moscow, Russia
- PSG
Institute of Advanced Studies, Coimbatore, Tamil Nadu 641004, India
| | | | - Riu Riu Wary
- Solar
Energy Materials Research & Testing Laboratory (SMaRT lab), Department
of Physics, National Institute of Technology
Silchar, Silchar, Assam 788010, India
| | - Andrey S. Vasenko
- HSE
University, 101000 Moscow, Russia
- Donostia
International Physics Center (DIPC), 20018 San Sebastián-Donostia, Euskadi, Spain
| | - Oleg V. Prezhdo
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
- Department
of Physics & Astronomy, University of
Southern California, Los Angeles, California 90089, United States
| | - Ranjith G. Nair
- Solar
Energy Materials Research & Testing Laboratory (SMaRT lab), Department
of Physics, National Institute of Technology
Silchar, Silchar, Assam 788010, India
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Vrithias NR, Katsara K, Papoutsakis L, Papadakis VM, Viskadourakis Z, Remediakis IN, Kenanakis G. Three-Dimensional-Printed Photocatalytic Sponges Decorated with Mn-Doped ZnO Nanoparticles. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5672. [PMID: 37629963 PMCID: PMC10456673 DOI: 10.3390/ma16165672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 08/12/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023]
Abstract
The present work reports on the fabrication of high-density polyethylene sponges, decorated with Mn-doped ZnO nanostructures. The sponges were developed utilizing three-dimensional printing technology, while Mn-doped ZnO nanostructures, with varying doping levels, were grown at mild temperatures. The nanostructures were fully characterized by means of scanning electron microscopy, X-ray diffraction, and Raman spectroscopy, revealing the existence of Mn doping. Moreover, their photocatalytic properties were investigated using the degradation/decolorization of a commercially available liquid laundry detergent, based on synthetic, less foaming ingredients, under UV irradiation. The Mn-doped ZnO nanostructures show better photocatalytic activity at higher doping levels. This study demonstrates that it is possible to achieve the adequate degradation of a typical detergent solution in water by means of low-cost and environmentally friendly approaches, while Mn-doped ZnO/HDPE nanostructures are good candidates for real environmental applications.
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Affiliation(s)
- Nikolaos Rafael Vrithias
- Institute of Electronic Structure and Laser, Foundation for Research & Technology-Hellas, N. Plastira 100, 700 13 Heraklion, Crete, Greece; (N.R.V.)
- Department of Materials Science and Technology, University of Crete, 710 03 Heraklion, Crete, Greece
| | - Klytaimnistra Katsara
- Institute of Electronic Structure and Laser, Foundation for Research & Technology-Hellas, N. Plastira 100, 700 13 Heraklion, Crete, Greece; (N.R.V.)
- Department of Agriculture, Hellenic Mediterranean University, Estavromenos, 714 10 Heraklion, Crete, Greece
| | - Lampros Papoutsakis
- Institute of Electronic Structure and Laser, Foundation for Research & Technology-Hellas, N. Plastira 100, 700 13 Heraklion, Crete, Greece; (N.R.V.)
- Department of Chemistry, University of Crete, 710 03 Heraklion, Crete, Greece
| | - Vassilis M. Papadakis
- Institute of Electronic Structure and Laser, Foundation for Research & Technology-Hellas, N. Plastira 100, 700 13 Heraklion, Crete, Greece; (N.R.V.)
- Department of Industrial Design and Production Engineering, University of West Attica, 122 43 Athens, Greece
| | - Zacharias Viskadourakis
- Institute of Electronic Structure and Laser, Foundation for Research & Technology-Hellas, N. Plastira 100, 700 13 Heraklion, Crete, Greece; (N.R.V.)
| | - Ioannis N. Remediakis
- Institute of Electronic Structure and Laser, Foundation for Research & Technology-Hellas, N. Plastira 100, 700 13 Heraklion, Crete, Greece; (N.R.V.)
- Department of Materials Science and Technology, University of Crete, 710 03 Heraklion, Crete, Greece
| | - George Kenanakis
- Institute of Electronic Structure and Laser, Foundation for Research & Technology-Hellas, N. Plastira 100, 700 13 Heraklion, Crete, Greece; (N.R.V.)
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Zhang JY, Zhou D, Sun YS, Lu Y, Liu JK. Anticorrosion Performance and Application of a Mixed-Valence Mn 0xMn 2+0.05–xZn 0.95O Solid Solution Induced by Magnetic Doping. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b05229] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jing-Yu Zhang
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology (ECUST), Shanghai 200237, P.R. China
| | - Dan Zhou
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology (ECUST), Shanghai 200237, P.R. China
| | - Yi-Shuo Sun
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology (ECUST), Shanghai 200237, P.R. China
| | - Yi Lu
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology (ECUST), Shanghai 200237, P.R. China
| | - Jin-Ku Liu
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology (ECUST), Shanghai 200237, P.R. China
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Jiang W, Meng L, Zhang S, Chuai X, Sun P, Liu F, Yan X, Gao Y, Liang X, Lu G. Enhanced resistive acetone sensing by using hollow spherical composites prepared from MoO3 and In2O3. Mikrochim Acta 2019; 186:359. [DOI: 10.1007/s00604-019-3471-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 04/29/2019] [Indexed: 10/26/2022]
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